Power-transmitting device.



PATENTED DEC. 17, 190

G. B. BLAKE. POWER TRANSMITTING DEVICE.

' APPLIUATION FILED DBO. 11,1906.

GEORGE EDWARD BLAKE, OF GREENOASTLE, INDIANA.

POWER-TRANSMITTING DEVICE.

Specification of Letters Patent.

Patented uec. 17, 1907.

Application filed December 11. 1906- Serial No. 347,293.

To all whom it may concern:

Be it known that I, GEORGE E. BLAKE, a citizen of the United States,residing at Greencastle, in the county of Putnam and State of Indiana,have invented a new and useful Power-Transmitting Device, of which thefollowing is a specification.

This invention relates to motors, and has for its principal object toprovide improved means for converting reclprocatory into r0- tarymotion, the device being especially valuable in connection with motorsof that class in which an explosive charge or a fluid under pressureconstitutes the working force.

A further object of the invention is to provide an improved form ofpower transmitting mechanism of such nature that a relatively slowreciprocatory movement may be transmitted into rotary movement of highspeed.

With these and other objects in view, as will more fully hereinafterappear, the invention consists in certain novel features of constructionand arrangement of parts, hereinafter fully described, illustrated inthe accompanying drawing, and particularly pointed out in the appendedclaims, it being understood that various changes in the form,proportions, size and minor details of the structure may be made withoutdeparting from the spirit or sacrificing any of the advantages of theinvention.

In the accompanying drawings :Figure 1 is a side elevation, partly insection, of a power transmitting mechanism constructed in accordancewith the invention. Fig. 2 is a vertical sectional view of the same onthe line 2 2 of Fig. 1.

Similar numerals of reference are employed to indicate correspondingparts throughout the several figures of the drawings.

The apparatus forming the subject of the present invention is designedfor use in connection with internal combustion or other engines of thereciprocating type, and is in tended to convert the reciprocatingmovement into intermittent rotative movement, or it may be employed inconnection with any reci rocatory element for the same purpose.

T e working parts of the power transmitting device are shown as mountedon two standards and 76 of which the standard 70 has bearings for acrank shaft 71, on which is mounted the balance or belt wheel 72. Thecrank shaft is connected by a rod 73 to a cross head 7 4 that slides inguides 75 carried by the frame 76, and said cross head for the receptionof two shafts and 81, and

to the inner ends of these shafts are secured ratchet wheels 82 whilethe outer ends carry belt or other Wheels 83 from which motion may beimparted to any mechanism to be driven.

Mounted loosely on each shaft 8081 is a hub 85 carrying a ratchet Wheel86, and to the hub is secured the inner end of a spiral spring 87, theouter end of the spring being secured to a fixed casing 88 carried bythe frame. Each ratchet wheel 86 carries a spring pressed pawl 89 thatintermeshes with the ratchet pinions 82 of the shaft.

The teeth of the ratchet wheels 86 face in the same direction, and saidteeth are arranged to be engaged by two racks 90 and 91, having teeththat face in opposite directions, respectively. These racks are pivotedto the cross head 74, and are held in ratchetwheel engaging position byleaf springs 92, the racks being so mounted and arranged that during theout stroke of the cross head in the direction of the crank shaft 71, theteeth of the rack 90 will engage the upper ratchet wheel, and will turnthe same in the direction indicated by the arrow in Fig. 1, this movement being transmitted through the hub 85 to the uppermost spring 87,and at the completion of the out stroke, the teeth. of the rack 90 willstill remain in mesh with the teeth of the ratchet wheel, and as therack moves in the opposite direction, the spring will'be free to unwind.and will rotate said ratchet wheel in the opposite direction, and themovement will be transmitted through the pawl 89 to the ratchet wheel 82and shaft 80, and from thence may be transmitted through the wheel 83.toany device to be driven, for instance, a compressor, and this movementand the unwinding of the spring may be accomplished at any desiredspeed.

During the out stroke of the cross head, the teeth of the rack willremain in mesh with the lower ratchet wheel as the latter rotates underthe influence of its spring, but on the return or in stroke, said rack91 will turn the same positively to wind up the lower spring, so thatthe power stored in the lower spring may be utilized for revolving thelower shaft 81 in the manner described in reference to the upper shaft.

I claim g 1. In apparatus for transforming reciproeating motion intointermittent rotative movement, a reciprocatory cross head, a rackcarried thereby, a shaft, a ratchet Wheel mounted loosely on the shaftand With Which the rack engages, a spring casing surrounding the shaft,a spiral spring having its outer end secured to the casing and its innerend to the ratchet w heel, a ratchet pinion secured to the shaft, and apawl carried by the ratchet Wheel and engaging said pinion.

2. In mechanism of the class described, the combination with areciprocatory cross head, of a cross head guide, a pair of springpressed racks, pivotally connected to the cross head and having teethfacing in opposite directions, respectively, a pair of power shafts,

GEORGE EDWARD BLAKE.

I/Vitnesses 2 PARKE DUNBAR, JOHN G. DUNBAR.

